David Phaup, a supporter of Libertarian Party presidential candidate Gary Johnson, is seen holding a campaign sign on the Dunlavy Street bridge over U.S. 59 during rush hour traffic Tuesday.

David Phaup, a supporter of Libertarian Party presidential candidate Gary Johnson, is seen holding a campaign sign on the Dunlavy Street bridge over U.S. 59 during rush hour traffic Tuesday.

Photo: By Jay R. Jordan

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Libertarian Party presidential candidate Gary Johnson supporters hold up campaign signs on the Dunlavy Street bridge over U.S. 59 on Tuesday.

Libertarian Party presidential candidate Gary Johnson supporters hold up campaign signs on the Dunlavy Street bridge over U.S. 59 on Tuesday.

Photo: By Jay R. Jordan

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Libertarian Party presidential candidate Gary Johnson supporters hold up campaign signs on the Dunlavy Street bridge over U.S. 59 on Tuesday.

Libertarian Party presidential candidate Gary Johnson supporters hold up campaign signs on the Dunlavy Street bridge over U.S. 59 on Tuesday.

Photo: By Jay R. Jordan

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Joseph Duncan, right, is seen holding a campaign sign for Libertarian Party presidential candidate Gary Johnson on the Dunlavy Street bridge over U.S. 59 during rush hour traffic Tuesday.

Joseph Duncan, right, is seen holding a campaign sign for Libertarian Party presidential candidate Gary Johnson on the Dunlavy Street bridge over U.S. 59 during rush hour traffic Tuesday.

Photo: By Jay R. Jordan

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Nathan Watts waves to honking cars on U.S. 59 as they pass under the Dunlavy Street bridge during rush hour Tuesday. Watts and other Libertarian Party presidential candidate Gary Johnson supporters held signs there Tuesday.

Nathan Watts waves to honking cars on U.S. 59 as they pass under the Dunlavy Street bridge during rush hour Tuesday. Watts and other Libertarian Party presidential candidate Gary Johnson supporters held signs

Nathan Watts, a supporter of Libertarian Party presidential candidate Gary Johnson, smiles at Lorelei Braun and her father Alex Braun as he holds a Johnson campaign sign. Watts and other Johnson supporters held signs on the Dunlavy Street bridge over U.S. 59 during rush hour traffic Tuesday. less

Nathan Watts, a supporter of Libertarian Party presidential candidate Gary Johnson, smiles at Lorelei Braun and her father Alex Braun as he holds a Johnson campaign sign. Watts and other Johnson supporters held ... more

Photo: By Jay R. Jordan

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Traffic piles up during rush hour Tuesday as supporters of Libertarian Party presidential candidate Gary Johnson held campaign signs on the Dunlavy Street bridge over U.S. 59.

Traffic piles up during rush hour Tuesday as supporters of Libertarian Party presidential candidate Gary Johnson held campaign signs on the Dunlavy Street bridge over U.S. 59.

Photo: By Jay R. Jordan

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A truck reflects a campaign sign for Libertarian Party presidential candidate Gary Johnson during rush hour traffic on U.S. 59 Tuesday.

A truck reflects a campaign sign for Libertarian Party presidential candidate Gary Johnson during rush hour traffic on U.S. 59 Tuesday.

Photo: By Jay R. Jordan

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PHOTOS: Gary Johnson supporters campaign over Southwest Freeway

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Supporters of Gary Johnson, the Libertarian Party presidential candidate, held a rally dozens of feet above the Southwest Freeway on Tuesday.

About a dozen supporters flocked to the Dunlavy Street bridge over U.S. 59 around 5 p.m. to show off campaign signs to rush hour traffic below.